Next hop ingress protection of label switched paths
US9319305B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 17, 2014 |
| Grant date | Apr 19, 2016 |
| Priority date | — |
| Expiry date | Jul 15, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A network node for providing ingress fault protection. The network node may be along a primary label switched path (LSP) and may be configured to receive an ingress protection request message that identifies one or more other network nodes along the primary LSP. The network node may generate a forwarding table that comprises one or more forwarding entries for the other network nodes along the primary LSP and one or more forwarding entries for the other network nodes along a backup LSP. In typical operation, the network node may receive data traffic from a first source path within a label switched network and may send the data traffic using the primary LSP. When an ingress node fault in the first source path is present, the network node may receive data traffic from a second source path and may send the data traffic using the backup LSP.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.